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Finding the Fourth Proportional to 691,901.76, 954,802.77 and 405,612.53

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Solution

The fourth proportional to 691,901.76, 954,802.77 and 405,612.53 is: 559,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,901.76 : 954,802.77 = 405,612.53 : x
  2. Step 2: Convert to fraction form
    691,901.76/954,802.77 = 405,612.53/x
  3. Step 3: Cross multiply
    691,901.76x = 954,802.77 × 405,612.53
  4. Step 4: Simplify right side
    691,901.76x = 387,279,962,416.69
  5. Step 5: Solve for x
    x = 387,279,962,416.69/691,901.76
  6. Step 6: Final answer
    x = 559,732.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.